Power reverse gear



EN Q E E Dec. 18; w23. limi-@5557k W. GUENST POWER REVERSE GEAR 4 Sheets-Sheet l W. GUENST POWER REVERSE GEAR Dec. 18, '11923. LZS? Filed Oct. 25. 1920 4 Sheets-Sheet E Dec.. i8

4 sheets-sheet 3 Filed Oct. 25 1920 l 05m In-- 7 Dec., i8, H9223.

19477557 w. GUENST POWER REVERSE GEAR 1920 4 Sheets-Sheet .4

Filed Oct. 25

Patented Bec. T8, i223,

NETE@ STATES PATENT @FFMCD WILLIAM GUENST, F PHILADELPHIA, PENNSYLVANIA, ASSXGNOR QF ONE-HALFTO SMUM S. NEWMAN, OF PITTSBURGH, PENNSYLVANIA.

POWER REVERSE GEAR.

Application led October 25, 1920. Serial No 419,232.

To all 'whomz't may concern.'

Be it known that ll, WILLIAM GUENs'r, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia e and State of Pennsylvania, have invented certain new and useful Improvements in Power Reverse Gears, of which the following is a specification.

One object of my invention is to provide m an improved power reverse gear which will be particularly adapted for use on locoinotives and which will be so constructed as to e'ect a quick and certain movement of the reverse mechanism so that the latter will be heldl in any position into which it has been shifted.

` Another object is to provide means which will enable the engineer to accurately determine the point of cut-ofi' of the valves .so that the most economical results in the operation of the locomotive can be obtained.

-Another object is to make the device oi my invention of a durable and comparatively simple construction and which can be operated at a low cost.

These objects, and other advantageous ends which will be described hereinafter, attain in the following manner, reference being had to the accompanying drawings 'io in which- Figure 1 is an elevation,`partly diagrammatic, showing my invention applied to a locomotive and illustrating how the same can be attached to the arm which-connects with the reverse link thereof; said reverse link not being illustrated,

Figure 2 is an enlarged longitudinal elevation showing certain of the features of my invention, j

Figure 3 is an end elevation looking in the direction of the left hand end of Fi re 2,

Figure 4 is a section taken on the ine 4-4 of Figure 2,

Figure 5 is an end of Figure 2,

Figure 6 is a fragmentary section taken on the line 6-6 of Figure 2,

Figure 7 is a top plan `view showing a resilient housing connection which li preferably employ,

Figures 8, 9 and 10 are respectively a side view, top plan and end view of one' of the yoked connecting members as shown 1n Figure 7, and

Figure 11 is a fragmentary elevation elevation of the right hand showing certain of the parts of my invention and illustrated on a larger scale than that illustrated in Figure 1.

Referring to the drawings, 12 represents allocomotive which may be of any type em- @0 ployingan arm 13 for attachment to the reverse link which eects the reverse movement of the locomotive.

My invention consists in providing a pneumatic motor 14 which has a shaft 15 capable of being rotated in either direction when pressure iluid-such as compressed air is supplied to the motor and it is hereby made of record that the motor 14 may be of any well known type capable of reversing a shaft such as thejshaft 15. The shaft 15 is rotatably mounted in a frame or supporting structure 16 and has an extension 17 to which is connected a worm 18 through the medium of a universal joint 19. The opposite end of the worm 18 vis movably connected to a slide 20 capable of being moved upwardly or downwardly through the medium of a screw 21 operated by a hand wheel 22. The slide 2() has a screw threaded projection or nut 23 in which the screw 21 engages and by rotating the screw 21, the worm 18 can he moved into or out of engagement with a worm wheel 24 which is rotatably mounted in an extension 25 of the supporting structure 16. The supporting structure 16 below the motor` 14 forms a` bearing for an auxiliary shaft 26 which may be rotated by a hand wheel 27. The shaft 26 is connected to a worm 28 through the medium of a universal joint 29 and the opposite end of the worm 28 is movably connected to the slide 20. The arrangement is such that when the slide is moved downwardly to move the worm 18 kkinto mesh with the worm wheel 24, the worm 28 will be moved out of mesh with the worin wheel 24 so that upon a rotation of the shaft 15, by the motor 14, the worm wheel 24 will be automatically rotated. However, the up-v ttt@ ward movement of the slide 20 will move the worm 28 into mesh with the worm wheel 24 and simultaneously move the worm 18 out of mesh with the worm wheel 24. When the worm 28 is in engagement with the worm BMS wheel 24, the latter may be rotated by hand power upon the turning of the hand whee127.

A ilexiblc device 30, which as illustrated includes two substantially parallel bars 31 and 32 which are connected at their ende M@ by two chains 33 and 34, has the chain 33 passing over a sprocket wheel 35,; said sprocket wheel being rotatably connected to the worm wheel 24. The flexible device leads forwardly from the sprocket 35 and the chain 34 passes over an idler sprocket wheel 36l which is rotatively mounted in a bracket 37 which can be secured in any suitable manner to the forward portion of the locomotive in a manner shown in Figure 1. The bar 32 is made in two sections 38 and 39; the section 39 having one end `connected to the chain 34 and its other end extending throu h a hole 40 in a yoked member 41 which orms a part of a housingr 42. rll`he extreme end of the section 39 o the bar 32 within the yoked member 41 is pro-` vided with a head 43 and between this head 'and the end 44 of the yoked member is inter osed a coil spring 45 as clearly shown in igure 7.- 'lhe yoked member 41 is pivotally connected by a bolt 46 to a similarly constructed yoked member 47 which is ,provided with a hole 48 through which passes the end portion of the section 38 of the bar 32. The section 38 of the bar 32 is also provided with a head 49 Within the yoked member 47 anda spring 50 is interposed between lthe head 49 and the outer end of the yoked member 47.

r1`he bolt 46 forms a pivotal connection with the housing 42 for the arm 13 which is connected to the reverse link; the upper end 52 of the arm 13 being positioned between the pivoted ends of the yoked members 41 and 47. By constructing each of the yoked members with offset portions as shown in Figures 7 to 10 inclusive, the members may be made identical and so as to keep the sections 38 and 39 of the bar 32 substantially in axial alinement.

The operation. of the device thus far specifically described is as follows Considering that the worm 18 is in mesh with the worm wheel 24 and it is desired to operate the reversing arm 13, fluid pres sure is sup lied to the motor 14 to e'ect rotation of t e shaft 15. rll`his movement will then be transmitted through the worm 18 to the worm 'wheel 24 and the sprocket 35 will ybe rotated so as to etifect movement of the flexible device longitudinally; the bar 32 edecting the swinging movement of the reverse arm 13 according to the direction in which the shaft 15 is rotated. It will be understood that the sprin 45 and 50 are sutliciently strong as to o y re-act on a stress well above the motor power necessary to operate the. arm 13 and therefore the springs 45 and 50 are included only as a s ockabsorber inte sed between the arm 13 and the Horrible evice. lf it is desired at any time to move .the device by hand power, it is merely nem to turn the and wheel 22 and thereby e ect the movemamaria ment of the worm 28 into mesh with the worm wheel 24 and the worm wheel18 out of mesh with` the worm wheel 24, after which by rotating the wheel 27, the sprocket 35 will be rotated through the medium of engagement of the worm 26 with the worm wheel 24.

As illustra-ted in Figure 1, the mechanism directly adjacent the motor is positioned within the cab of the locomotive so as to be in a position near the engineer and in order 4that the engineer may accurately determine the exact position of the cut-oil valve, ll provide indicating means which is directly conc nected with the motor 14.

This indicating means includes a pinion 53 which is rotatable in conjunction with the shaft 15 and operatively connected with a shaft 54 b a train of ears as shown in Figure 3. he shaft 54 as an indicating pointer 55 adapted to traverse the aded markings 56 of an indicating dial 57 ocated at the end of the supporting structure 16 so as to be clearly seen by the engineer. It will thus be seen that means is provided to enable the engineer to note the point of cut-0H"a of valves so that the most economical results in the operation of the locomotive may be obtained. In the preferred embodiment of my invention, air from the air `supply line of the locomotive can be employed to drive the pneumatic motor 15 and by virtue of this arrangement such a ratio of gearing is established between the motor and the worm drive that but little air is required to operate the motor and an ea but powerful action of the parts is effected.

lt will be noted that the tiexible device .30 is in the form of a belt or band, theopposite ends of which pas over the respective sprockets 35 and 36 and that one run of the belt is attached to the arm 13 so that when the runs olthe belt are shifted, a

swingingmovement of the arm 13 will be elected and the extent of this swinging movement. will determine the amount of movement of the reverse link; the path of movement of the reverse link being indicated by the arrow :v as shown in Figure 1.

While l have described my invention as taking a particular form, it ywill be understood that the various parts of my invention may be cha ed Without--departing from the spirit thereo and henoe l do not limit myself to the precise construction set forth, but consider that ll am at liberty to make such changes and alterations as fairly come/within the, scope of the appended claims.

Having thus. described my invention, what l claim as new and desire to lsecure by Letters Patent is 1. Reversing mechanism including 'a reversible motor; a shaft driven thereby; a worm wheel; a rocket wheel connected ywith the worm w eel; a second sprocket lll@ naamw wheel; sprocket wheels; a reversing link; an operative connection between the flexible connection and the reversing link; a worm having a jointed connection with the motor shaft; an auxiliary shaft; a worml having a jointed connection with the auxiliary shaft; means for engaging either worm with they worm wheel, and means for actuating the auxiliary shaft.

2. Reversing mechanism including a reversible motor; a' shaft driven thereby; an extension connected with the shaft by a universal joint; a worm carried thereby; an auxiliary shaft; an extension connected with the auxiliary sha-ft by a universal joint;

means for actuating said shaft; a worm cara Hexible connection between the` ried thereby; a worm wheel; a sprocket wheel connected to the worm wheel; a movably mounted member connecting the shaft extensions; means for moving said member to engage either Worm with the worm gear; a second sprocket wheel; a flexible connection between the sprocket wheels; a reversing link, and an operative connection loe-- tween the flexible connection andthe reversing link.

n testimony whereof l have signed my name to this speciication in the presence of two subscribing Witnesses.

WLLAM GUENST. Witnesses:

ELIZABETH Gr-Ann, CHAs. E.4 Po'r'rs. 

